Subsection (2) applies where a blight notice has been served and either—
no counter-notice objecting to that notice is served in accordance with this Chapter; or
where such a counter-notice has been served, the objection is withdrawn or, on a reference to the Upper Tribunal, is not upheld by the Tribunal.
Where this subsection applies, the appropriate authority shall be deemed—
to be authorised to acquire compulsorily under the appropriate enactment the interest of the claimant in the hereditament, or in the case of an agricultural unit the interest of the claimant in so far as it subsists in the affected area, and
to have served a notice to treat in respect of it on the date mentioned in subsection (3).
The date referred to in subsection (2)—
in a case where, on a reference to the Upper Tribunal, the Tribunal determines not to uphold the objection, is the date specified in directions given by the Tribunal in accordance with section 153(7);
in any other case, is the date on which the period of two months beginning with the date of service of the blight notice comes to an end.
Subsection (5) applies where the appropriate authority have served a counter-notice objecting to a blight notice on the grounds mentioned in section 151(4)(c) and either—
the claimant, without referring that objection to the Upper Tribunal, and before the time for so referring it has expired—
gives notice to the appropriate authority that he accepts the proposal of the authority to acquire the part of the hereditament or affected area specified in the counter-notice, and
withdraws his claim as to the remainder of that hereditament or area; or
on a reference to the Upper Tribunal, the Tribunal makes a declaration in accordance with section 153(6) in respect of that part of the hereditament or affected area.
Where this subsection applies, the appropriate authority shall be deemed—
to be authorised to acquire compulsorily under the appropriate enactment the interest of the claimant in so far as it subsists in the part of the hereditament or affected area specified in the counter-notice (but not in so far as it subsists in any other part of that hereditament or area), and
to have served a notice to treat in respect of it on the date mentioned in subsection (6).
The date referred to in subsection (5)—
in a case falling within paragraph (a) of subsection (4), is the date on which notice is given in accordance with that paragraph; and
in a case falling within paragraph (b) of that subsection, is the date specified in directions given by the Upper Tribunal in accordance with section 153(7).